/* 
 * PROJECT: FLARToolkit
 * --------------------------------------------------------------------------------
 * This work is based on the original ARToolKit developed by
 *   Hirokazu Kato
 *   Mark Billinghurst
 *   HITLab, University of Washington, Seattle
 * http://www.hitl.washington.edu/artoolkit/
 *
 * The FLARToolkit is Java version ARToolkit class library.
 * Copyright (C)2008 R.Iizuka
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this framework; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 * For further information please contact.
 *	http://nyatla.jp/nyatoolkit/
 *	<airmail(at)ebony.plala.or.jp>
 * 
 */
package org.libspark.flartoolkit.core.pickup;

import org.libspark.flartoolkit.FLARException;
import org.libspark.flartoolkit.core.FLARMat;
import org.libspark.flartoolkit.core.FLARSquare;
import org.libspark.flartoolkit.core.raster.rgb.*;
import org.libspark.flartoolkit.core.rasterreader.*;
/**
 * 24ビットカラーのマーカーを保持するために使うクラスです。 このクラスは、ARToolkitのパターンと、ラスタから取得したパターンを保持します。
 * 演算順序以外の最適化をしたもの
 * 
 */
public class FLARColorPatt_O1 implements IFLARColorPatt
{
	private static final int AR_PATT_SAMPLE_NUM = 64;// #define
														// AR_PATT_SAMPLE_NUM 64

	private int extpat[][][];

	private int width;

	private int height;

	public FLARColorPatt_O1(int i_width, int i_height)
	{
		this.width = i_width;
		this.height = i_height;
		this.extpat = new int[i_height][i_width][3];
		this.wk_pickFromRaster_ext_pat2 = new int[i_height][i_width][3];
	}

	// public void setSize(int i_new_width,int i_new_height)
	// {
	// int array_w=this.extpat[0].length;
	// int array_h=this.extpat.length;
	// //十分なサイズのバッファがあるか確認
	// if(array_w>=i_new_width && array_h>=i_new_height){
	// //OK 十分だ→サイズ調整のみ
	// }else{
	// //足りないよ→取り直し
	// this.wk_pickFromRaster_ext_pat2=new int[i_new_height][i_new_width][3];
	// this.extpat=new int[i_new_height][i_new_width][3];
	// }
	// this.width =i_new_width;
	// this.height=i_new_height;
	// return;
	// }

	public int[][][] getPatArray()
	{
		return extpat;
	}

	public int getWidth()
	{
		return width;
	}

	public int getHeight()
	{
		return height;
	}

	private final FLARMat wk_get_cpara_a = new FLARMat(8, 8);

	private final FLARMat wk_get_cpara_b = new FLARMat(8, 1);

	private final FLARMat wk_get_cpara_c = new FLARMat(8, 1);

	/**
	 * 
	 * @param world
	 * @param vertex
	 * @param para
	 *            [3x3]
	 * @throws FLARException
	 */
	private boolean get_cpara(double world[][], double vertex[][], double[] para)
			throws FLARException
	{
		FLARMat a = wk_get_cpara_a;// 次処理で値を設定するので、初期化不要// new FLARMat( 8, 8 );
		double[][] a_array = a.getArray();
		FLARMat b = wk_get_cpara_b;// 次処理で値を設定するので、初期化不要// new FLARMat( 8, 1 );
		double[][] b_array = b.getArray();
		double[] a_pt0, a_pt1, world_pti;

		for (int i = 0; i < 4; i++) {
			a_pt0 = a_array[i * 2];
			a_pt1 = a_array[i * 2 + 1];
			world_pti = world[i];

			a_pt0[0] = world_pti[0];// a->m[i*16+0] = world[i][0];
			a_pt0[1] = world_pti[1];// a->m[i*16+1] = world[i][1];
			a_pt0[2] = 1.0;// a->m[i*16+2] = 1.0;
			a_pt0[3] = 0.0;// a->m[i*16+3] = 0.0;
			a_pt0[4] = 0.0;// a->m[i*16+4] = 0.0;
			a_pt0[5] = 0.0;// a->m[i*16+5] = 0.0;
			a_pt0[6] = -world_pti[0] * vertex[i][0];// a->m[i*16+6] =
													// -world[i][0] *
													// vertex[i][0];
			a_pt0[7] = -world_pti[1] * vertex[i][0];// a->m[i*16+7] =
													// -world[i][1] *
													// vertex[i][0];
			a_pt1[0] = 0.0;// a->m[i*16+8] = 0.0;
			a_pt1[1] = 0.0;// a->m[i*16+9] = 0.0;
			a_pt1[2] = 0.0;// a->m[i*16+10] = 0.0;
			a_pt1[3] = world_pti[0];// a->m[i*16+11] = world[i][0];
			a_pt1[4] = world_pti[1];// a->m[i*16+12] = world[i][1];
			a_pt1[5] = 1.0;// a->m[i*16+13] = 1.0;
			a_pt1[6] = -world_pti[0] * vertex[i][1];// a->m[i*16+14] =
													// -world[i][0] *
													// vertex[i][1];
			a_pt1[7] = -world_pti[1] * vertex[i][1];// a->m[i*16+15] =
													// -world[i][1] *
													// vertex[i][1];
			b_array[i * 2 + 0][0] = vertex[i][0];// b->m[i*2+0] =
													// vertex[i][0];
			b_array[i * 2 + 1][0] = vertex[i][1];// b->m[i*2+1] =
													// vertex[i][1];
		}
		// JartkException.trap("未チェックのパス");
		if (!a.matrixSelfInv()) {
			return false;// 逆行列を求められないので失敗
		}

		// JartkException.trap("未チェックのパス");
		FLARMat c = wk_get_cpara_c;// 次処理で結果を受け取るので、初期化不要//new FLARMat( 8, 1 );
		double[][] c_array = c.getArray();

		c.matrixMul(a, b);
		for (int i = 0; i < 2; i++) {
			para[i * 3 + 0] = c_array[i * 3 + 0][0];// para[i][0] = c->m[i*3+0];
			para[i * 3 + 1] = c_array[i * 3 + 1][0];// para[i][1] = c->m[i*3+1];
			para[i * 3 + 2] = c_array[i * 3 + 2][0];// para[i][2] = c->m[i*3+2];
		}
		para[2 * 3 + 0] = c_array[2 * 3 + 0][0];// para[2][0] = c->m[2*3+0];
		para[2 * 3 + 1] = c_array[2 * 3 + 1][0];// para[2][1] = c->m[2*3+1];
		para[2 * 3 + 2] = 1.0;// para[2][2] = 1.0;
		return true;
	}

	private final double[][] wk_pickFromRaster_local = new double[4][2];

	private final double[] wk_pickFromRaster_para = new double[9];// [3][3];

	private int[][][] wk_pickFromRaster_ext_pat2 = null;// コンストラクタでint[height][width][3]を作る

	private final double[][] wk_pickFromRaster_world = {// double world[4][2];
	{ 100.0, 100.0 }, { 100.0 + 10.0, 100.0 }, { 100.0 + 10.0, 100.0 + 10.0 },
			{ 100.0, 100.0 + 10.0 } };

	/**
	 * pickFromRaster関数から使う変数です。
	 * 
	 */
	private static void initValue_wk_pickFromRaster_ext_pat2(
			int[][][] i_ext_pat2, int i_width, int i_height)
	{
		int i, i2;
		int[][] pt2;
		int[] pt1;
		for (i = i_height - 1; i >= 0; i--) {
			pt2 = i_ext_pat2[i];
			for (i2 = i_width - 1; i2 >= 0; i2--) {
				pt1 = pt2[i2];
				pt1[0] = 0;
				pt1[1] = 0;
				pt1[2] = 0;
			}
		}
	}

	private final int[] wk_pickFromRaster_rgb_tmp = new int[3];

	/**
	 * imageから、i_markerの位置にあるパターンを切り出して、保持します。 Optimize:STEP[769->]
	 * 
	 * @param image
	 * @param i_marker
	 * @return 切り出しに失敗した
	 * @throws Exception
	 */
	public boolean pickFromRaster(IFLARRgbRaster image, FLARSquare i_square)throws FLARException
	{
		double d, xw, yw;
		int xc, yc;
		int xdiv, ydiv;
		int xdiv2, ydiv2;
		int lx1, lx2, ly1, ly2;

		int img_x = image.getWidth();
		int img_y = image.getHeight();

		double xdiv2_reciprocal; // [tp]
		double ydiv2_reciprocal; // [tp]

		// int[] x_coord=i_marker.x_coord;
		// int[] y_coord=i_marker.y_coord;
		// int[] vertex=i_marker.mkvertex;
		double[][] local = wk_pickFromRaster_local;// double local[4][2];
		//
		for (int i = 0; i < 4; i++) {
			local[i][0] = i_square.imvertex[i].x;
			local[i][1] = i_square.imvertex[i].y;
		}

		double[][] world = wk_pickFromRaster_world;
		/*
		 * world[0][0] = 100.0; world[0][1] = 100.0; world[1][0] = 100.0 + 10.0;
		 * world[1][1] = 100.0; world[2][0] = 100.0 + 10.0; world[2][1] = 100.0 +
		 * 10.0; world[3][0] = 100.0; world[3][1] = 100.0 + 10.0;
		 */
		double[] para = wk_pickFromRaster_para; // double para[3][3];
		// パターンの切り出しに失敗することもある。
		if (!get_cpara(world, local, para)) {
			return false;
		}
		lx1 = (int) ((local[0][0] - local[1][0]) * (local[0][0] - local[1][0]) + (local[0][1] - local[1][1])
				* (local[0][1] - local[1][1]));
		lx2 = (int) ((local[2][0] - local[3][0]) * (local[2][0] - local[3][0]) + (local[2][1] - local[3][1])
				* (local[2][1] - local[3][1]));
		ly1 = (int) ((local[1][0] - local[2][0]) * (local[1][0] - local[2][0]) + (local[1][1] - local[2][1])
				* (local[1][1] - local[2][1]));
		ly2 = (int) ((local[3][0] - local[0][0]) * (local[3][0] - local[0][0]) + (local[3][1] - local[0][1])
				* (local[3][1] - local[0][1]));
		if (lx2 > lx1) {
			lx1 = lx2;
		}
		if (ly2 > ly1) {
			ly1 = ly2;
		}
		xdiv2 = this.width;
		ydiv2 = this.height;

		while (xdiv2 * xdiv2 < lx1 / 4) {
			xdiv2 *= 2;
		}
		while (ydiv2 * ydiv2 < ly1 / 4) {
			ydiv2 *= 2;
		}

		if (xdiv2 > AR_PATT_SAMPLE_NUM) {
			xdiv2 = AR_PATT_SAMPLE_NUM;
		}
		if (ydiv2 > AR_PATT_SAMPLE_NUM) {
			ydiv2 = AR_PATT_SAMPLE_NUM;
		}

		xdiv = xdiv2 / width;// xdiv = xdiv2/Config.AR_PATT_SIZE_X;
		ydiv = ydiv2 / height;// ydiv = ydiv2/Config.AR_PATT_SIZE_Y;

		/* wk_pickFromRaster_ext_pat2ワーク変数を初期化する。 */
		int[][][] ext_pat2 = wk_pickFromRaster_ext_pat2;// ARUint32 ext_pat2[AR_PATT_SIZE_Y][AR_PATT_SIZE_X][3];
		int extpat_j[][], extpat_j_i[];
		int ext_pat2_j[][], ext_pat2_j_i[];

		initValue_wk_pickFromRaster_ext_pat2(ext_pat2, this.width, this.height);

		xdiv2_reciprocal = 1.0 / xdiv2;
		ydiv2_reciprocal = 1.0 / ydiv2;
		int i, j;
		int[] rgb_tmp = wk_pickFromRaster_rgb_tmp;

		//ピクセルリーダーを取得
		IFLARRgbPixelReader reader=image.getRgbPixelReader();
		
		// arGetCode_put_zero(ext_pat2);//put_zero( (ARUint8 *)ext_pat2,
		// AR_PATT_SIZE_Y*AR_PATT_SIZE_X*3*sizeof(ARUint32) );
		for (j = 0; j < ydiv2; j++) {
			yw = 102.5 + 5.0 * (j + 0.5) * ydiv2_reciprocal;
			for (i = 0; i < xdiv2; i++) {
				xw = 102.5 + 5.0 * (i + 0.5) * xdiv2_reciprocal;
				d = para[2 * 3 + 0] * xw + para[2 * 3 + 1] * yw+ para[2 * 3 + 2];
				if (d == 0) {
					throw new FLARException();
				}
				xc = (int) ((para[0 * 3 + 0] * xw + para[0 * 3 + 1] * yw + para[0 * 3 + 2]) / d);
				yc = (int) ((para[1 * 3 + 0] * xw + para[1 * 3 + 1] * yw + para[1 * 3 + 2]) / d);

				if (xc >= 0 && xc < img_x && yc >= 0 && yc < img_y) {
					reader.getPixel(xc, yc, rgb_tmp);
					ext_pat2_j_i = ext_pat2[j / ydiv][i / xdiv];

					ext_pat2_j_i[0] += rgb_tmp[0];// R
					ext_pat2_j_i[1] += rgb_tmp[1];// G
					ext_pat2_j_i[2] += rgb_tmp[2];// B
					// System.out.println(xc+":"+yc+":"+rgb_tmp[0]+":"+rgb_tmp[1]+":"+rgb_tmp[2]);
				}
			}
		}
		// short[][][] ext_pat=new short[Config.AR_PATT_SIZE_Y][Config.AR_PATT_SIZE_X][3];//ARUint32
		// ext_pat2[AR_PATT_SIZE_Y][AR_PATT_SIZE_X][3];
		/* <Optimize> */
		int xdiv_x_ydiv = xdiv * ydiv;
		for (j = this.height - 1; j >= 0; j--) {
			extpat_j = extpat[j];
			ext_pat2_j = ext_pat2[j];
			for (i = this.width - 1; i >= 0; i--) { // PRL 2006-06-08.
				ext_pat2_j_i = ext_pat2_j[i];
				extpat_j_i = extpat_j[i];
				extpat_j_i[0] = (ext_pat2_j_i[0] / xdiv_x_ydiv);// ext_pat[j][i][0]=(byte)(ext_pat2[j][i][0] / (xdiv*ydiv));
				extpat_j_i[1] = (ext_pat2_j_i[1] / xdiv_x_ydiv);// ext_pat[j][i][1]=(byte)(ext_pat2[j][i][1]/(xdiv*ydiv));
				extpat_j_i[2] = (ext_pat2_j_i[2] / xdiv_x_ydiv);// ext_pat[j][i][2]=(byte)(ext_pat2[j][i][2]/(xdiv*ydiv));
			}
		}
		return true;
	}
}